She lives on Dolores St between 18th and 19th. Her name is Carmen Castillo. She harasses all the neighbors and frankly, she’s a bitter old crazy lady. She carries around an exacto knife, so be careful!

UPDATE: Further fun via Twitter:

@missionmission I might have a lead on swing slayer. Grumpy lady walks by hood tattoo shop, pokes head in, yells “don’t do it” and walks off